I have the same pistons(.030) and a Lunati .600 lift solid camshaft. They sit about .020 down in the bores(undecked) and I have more than .125 clearance using (.041?)Felpro head gaskets. It's been a few years since I built this motor and I have the clearances on a notebook(somewhere).

I thought about going to a bigger cam but decided instead to go that route on the new motor.